Philipp Chapkovski

LF0153

Forsthausweg 2

Duisburg 47057

I am a post-doctoral researcher at the University of Duisburg-Essen, Faculty of Social Sciences, Institute of Political Science, in the POLITSOLID ERC project.

My current research project concerns information avoidance: a puzzling sociological phenomenon when people prefer knowing less information, even if the rational behavior dictates the opposite. In particular I am interested in interaction of information avoidance with affective polarization, when people discriminate against those who hold opposite political views.

news

Jan 15, 2016	A simple inline announcement with Markdown emoji!
Nov 07, 2015	A long announcement with details
Oct 22, 2015	A simple inline announcement.

latest posts

May 14, 2024	Google Gemini updates: Flash 1.5, Gemma 2 and Project Astra
May 01, 2024	a post with tabs
Apr 29, 2024	a post with typograms

selected publications

PhysRev

Can Quantum-Mechanical Description of Physical Reality Be Considered Complete?

A. Einstein^*†, B. Podolsky^*, and N. Rosen^*

Phys. Rev., New Jersey. More Information can be found here , May 1935

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In a complete theory there is an element corresponding to each element of reality. A sufficient condition for the reality of a physical quantity is the possibility of predicting it with certainty, without disturbing the system. In quantum mechanics in the case of two physical quantities described by non-commuting operators, the knowledge of one precludes the knowledge of the other. Then either (1) the description of reality given by the wave function in quantum mechanics is not complete or (2) these two quantities cannot have simultaneous reality. Consideration of the problem of making predictions concerning a system on the basis of measurements made on another system that had previously interacted with it leads to the result that if (1) is false then (2) is also false. One is thus led to conclude that the description of reality as given by a wave function is not complete.